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Re: Standalone backends run StartupXLOG in an incorrect environment

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Bruce Momjian <bruce(at)momjian(dot)us>, Simon Riggs <simon(at)2ndquadrant(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Standalone backends run StartupXLOG in an incorrect environment
Date: 2010-04-19 15:19:20
Message-ID: 14536.1271690360@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackers
Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Mon, Mar 22, 2010 at 9:32 PM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
>> OK, I re-read it and still don't understand, but I don't have to.

> I re-read it too and I don't understand either.

The point is that a standalone backend will fail to execute recovery
correctly:
http://archives.postgresql.org/pgsql-hackers/2009-09/msg01297.php
This is bad enough now but seems likely to be an even bigger foot-gun
in an HS/SR world.

> This is LISTED as an
> open item for 9.0, but it is apparently not a new regression, so I
> think we should move it to the Todo list instead.  This problem was
> discovered six months ago, is not a new regression, and there is
> apparently no movement toward a fix, so it doesn't make sense to me
> that we should hold up either 9.0 beta or 9.0 final on account of it.

If you think we're at the point where this item is the main thing
standing between us and beta, I'll go do something about it.  I've
been waiting for the HS code to settle before trying to design a
solution...

			regards, tom lane

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